Metal pole



Patented @et i925.

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MAURICE LAGHMAN, OF NEW 'YORK,N. Y., ASSIGNOR TO ELECTR-Q STEELPEEJUCTS CORPORATION, OF NE YORK, N. Y., A CORPORATION OF NEXN YORK."

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To all whom 2i may concer/n.'

Be it known that l, MAURICE LAGHMAN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements Kin Metal lroles, of which the following is a specilication.

My present invention relates to the construction of tapered metal poles such as telegraph, telephone or other transmission line poles.

rlfhe object of the invention is to simplify the construction of these poles and particularly of such poles as require practically the same strength from all sides.

To these ends l employ a minimum number of parts to construct the pole as a whole and provide a rolled tapered metal section having side flanges for each part or member.

In the preferred form ofthe invention all the parts employed in the structure are duplicates of each other and each is a tapered channel section constructed from standard rolled metal shapes. In this way the pole may be shipped knock-down and by nesting the parte small space is required for storage or shipping. ,g rThe invention consists in the construction of metal pole hereinafter more particularly described and then specified in the claims. ln the accompanying drawings, Fig. l is a side elevation of a tapered metal pole constructed in accordance with this invention.

Fig. 2 is another side elevation of the` same--talren at right angles to that shown in Fig. 1'.

F ig. 3 is a transverse cross-section taken on the line 3 3 Fig. 1.

Fig. d is a perspective view of one of the members or units.4

Fig. 5 is a transverse cross-section through the same.

ln the preferred embodiment of the invention the pole proper comprises a middle member and two side members, one on each side of and secured to the middle member. rlhese members are preferably made up of but four duplicate parts or units and each part or unit is formed from rolled channel shaped sections of any desired standard size.

Each part is tapered from end to end and consists of two longitudinally divided lengths of metal 1,2 (see Figs. l and 5) each having a flange 3. The lengths are secured together along the jointe by spot welding,

riveting or otherwise. These parts are f formed as shown and described in my prior application led March 22nd, 1920, Serial No. 367,739 by taking a rolled section or sections of flanged bars and separating theL web by a bias cut, then reversing the relation of the `parts and securing them together thereby forming a tapered danged length of metal.

`To form the middle member 5 of the pole l preferably take two of these tapered chani nel sections and arrange them back to back,

riveting them together if desired. lf preferred this middle member may be constructed from an I-beam section.

Each side section 6, 7 is seated against the flanges 3 of the middle member and secured thereto in any desired way, riveting preferred. rlhe middle member 5 is preferably arranged down the center of the side members 6 and 7 so that in cross-section the pole forms an ll.

lf desired the side members 6 and 7 may also be formed from an lbeam section instead of a channel in which case there will be a double flange at each `longitudinal edge of the pole. Also if desired to lighten the pole or for ornamental purposes part-s of the webs of the members may be removed ac.- cording to any desired design.

By following this invention a tapered pole having any desired spread of base as well as equal strength from all sides may be constructed in the most economical manner.

What l" claim'as my invention is:

1. A tapered pole consisting of four tapered channel sections each tapered in its ,web or flat, two of said sections constituting sides of the pole while the two other sections have their webs or flats placed back to back and their danges secured to the flat of y tions of said parts made from the web or fiat being. secured together-between` flanges.

to produce the taper.` Y Y Y 3. A tapered'metal pole Yharing two tapered, ianged side members each consisting of' partsjof a longitudinally dividedV section of channel bar, the web of which is out on a bias and with the web portions of the divisions reversed and secured together to produce aV tapered channel member. and a tapered middle member having longitudinal flanges-on. its outer edges,saidmiddle mem.-

ber. spacing said side members apartl and havingr the flanges at its opposite Vedges secured against the vebY portion ofsaid com-V pound, flanged side members.

4f A tapered metal pole co-Iisisti-mqI of a middle member made up of' two tapered: channelA sections arranged back to back andl two tapered channel-shapedside` members the Webs or Hats of whichv are seatedagainst and secured respectively to vthe flanges at the. opposite edges of said compound, tapered middlemember. v

5. A tapered metal pole consisting of a middle member mande upl of twotapered channel' sections and sidemembers each consisting of a Vflanged section tapered from endk to end and made up of two flanged strips secured together at their bias cut edge, eachgsaid compound side member having its web or flat secured against the flanges of both of the twotapered channel sections constitutingr the middle member at one side thereof.

Signed' at New York.y in: the county ofi New York and State of New.y York this 16th p dayof AprilA. D. 1920.

' MAURICE LACHMAN. fitness IRENE LEEKOWITZ. 

